From baab0f27b543f8f17bad0e3a40b803763236edb9 Mon Sep 17 00:00:00 2001
From: Fabio Berger <me@fabioberger.com>
Date: Wed, 15 Aug 2018 16:50:23 -0700
Subject: Check for superfluous types in a packages index.ts and throw if they
 exist

---
 .../src/utils/doc_generate_and_upload_utils.ts     | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'packages/monorepo-scripts/src')

diff --git a/packages/monorepo-scripts/src/utils/doc_generate_and_upload_utils.ts b/packages/monorepo-scripts/src/utils/doc_generate_and_upload_utils.ts
index b51b17db1..b236c299f 100644
--- a/packages/monorepo-scripts/src/utils/doc_generate_and_upload_utils.ts
+++ b/packages/monorepo-scripts/src/utils/doc_generate_and_upload_utils.ts
@@ -185,6 +185,16 @@ export async function generateAndUploadDocsAsync(packageName: string, isStaging:
     const referenceNamesWithDuplicates = getAllReferenceNames(propertyName, finalTypeDocOutput, []);
     const referenceNames = _.uniq(referenceNamesWithDuplicates);
 
+    const exportedTypes = getAllTypeNames(finalTypeDocOutput, []);
+    const excessiveReferences = _.difference(exportedTypes, referenceNames);
+    if (!_.isEmpty(excessiveReferences)) {
+        throw new Error(
+            `${packageName} package exports BUT does not need: \n${excessiveReferences.join(
+                '\n',
+            )} \nin it\'s index.ts. Remove them then try again.`,
+        );
+    }
+
     const missingReferences: string[] = [];
     _.each(referenceNames, referenceName => {
         if (!_.includes(allExportedItems, referenceName) && _.isUndefined(EXTERNAL_TYPE_TO_LINK[referenceName])) {
@@ -230,6 +240,27 @@ export async function generateAndUploadDocsAsync(packageName: string, isStaging:
     });
 }
 
+function getAllTypeNames(node: any, typeNames: string[]): string[] {
+    if (!_.isObject(node)) {
+        return typeNames;
+    }
+    const typeKindStrings = ['Interface', 'Enumeration', 'Type alias'];
+    if (_.includes(typeKindStrings, node.kindString)) {
+        return [...typeNames, node.name];
+    }
+    let updatedTypeNames = typeNames;
+    _.each(node, nodeValue => {
+        if (_.isArray(nodeValue)) {
+            _.each(nodeValue, aNode => {
+                updatedTypeNames = getAllTypeNames(aNode, updatedTypeNames);
+            });
+        } else if (_.isObject(nodeValue)) {
+            updatedTypeNames = getAllTypeNames(nodeValue, updatedTypeNames);
+        }
+    });
+    return updatedTypeNames;
+}
+
 function getAllReferenceNames(propertyName: string, node: any, referenceNames: string[]): string[] {
     let updatedReferenceNames = referenceNames;
     if (!_.isObject(node)) {
-- 
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